Potential regime for heavy quarks dynamics and Lorentz nature of confinement

Details Potential regime for heavy quarks dynamics and Lorentz nature of confinement Potential regime for heavy quarks dynamics and Lorentz nature of confinement

1997-07-28

arxiv.org/abs/hep-ph/9707490v1

Phys.Lett. B414 (1997) 149-156

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, LaTeX2e, no figures

Scientific paper

10.1016/S0370-2693(97)01157-X

Propagation of the heavy quark in the field of a static antiquark source is studied in the framework of effective Dirac equation. The model of QCD vacuum is described by bilocal gluonic correlators. In the heavy quark limit the effective interaction is reduced to the potential one with 5/6 Lorentz scalar and 1/6 Lorentz vector linear confinement, while spin-orbit term is in agreement with Eichten-Feinberg-Gromes results. New spin-independent corrections to the leading confining regime are identified, which arise due to the nonlocality of the interaction in time direction and quark Zitterbewegung.

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